Hub removing tool



Feb. 28, 1933. N. w. TRAUTNER 1,399,218

HUB REMOVING TOOL Filed Aug. 23, 1929 Wicfialas W 'Fuu%ner Patented Feb. 28; 1933, I

NICHOLAS wi'rmurnnm onsrmAoL, MINNESOTA, I 1

- nun REMOVING 'ro'o 1 Application mednu us't 2a, 1929. ser1a1n6.-:i87,91s.r'

This invention. relates to improvements in I a hub removing tool and especially to means whereby thetool will maintain itself in operativeposition upon a hubwhile it is drawin the hub from a shaft; 1

t is my object to provide a device of the class described that is simple, compact, and inexpensive to manufacture,that ispositive in operation and can be usedwith a minimum of effort.

1 In the accompanying drawingI have illustrated the form ofhub and tapered shaft now embodied in a number of popular automobiles. In tools ofv this class it is important that. the hub engaging element be prevented from moving laterallywhile the shaft engaging device is in operation. Where the quickly removabletools, such as those of theclaw type, are employedxit is distinctly advantageous to provide means for retaining the shaft retaining means in axial alignment with the shaft because the tool as a whole is otherwise freely removable laterally of the shaft and it is sometimes necessaryto apply considerable force'manually to maintain the tool in operative position. My device is so constructed that it can not get out of axial alignment as will be more clearly pointed out in the following specification and claims.

In the accompanying drawing, Figure 1 is a side elevation of my device in operative po- 7 sition upon a hub; Fig. 2 is a plan view of the same' Fi 3 is alon itudinal section taken 1 on the line 33- of Fig. 2,,showing the man nerin which the tool is placed in operative position; Fig. 4 is a plan view of analternate form of my device and Fig. 5 is.a longitudinal sectiontaken on the line 55 of Fig. 4.

The preferred form of my device consists of a single casting 6 and a threaded thrust member 7 operating therein. A claw memher .8 at one end'of the casting is formed to fit a part of the periphery of a hub 9 backof and adjacent to an annular flange 10, integral with the hub. The other end of the casting ,6 consists of a threaded bearing lladapted to receive the thrust member 7. Between the clawmember 8 and the bearing 11,' I provide an annular recess or keeper 12 inaxial alignment with the bearing and thrust member I claim is new and desire to and ofsufiicient depth to ereceive the end of a shaft 13 protruding through'the hub 9. p

I have, for convenience; shown the device onthe under half of the hub 9." Itwill be understood, however, that it can be operated Ln kany position around the periphery of the u I d p I v V l g i 5 To draw thehub 9 from shaft13 with "my dev1ce, it is first necessary tosee that thrust member 7 is retracted in bearing 11 untilit doesnotprotrude into the keeper: 12. The tool-is then held at an angleflof about 30 to the shaft as shown in Fig. 3. In this position the clawmember 8 will slip-past the flange 10 as the end .of the shaft -13'is' being'inserted into keeper'12. The device will then be tilted to the position shown in Fig.1 where the hub out of contact with the tapered shaft-until it can be completely removed.

- ,wltwill now beunderstood that whenxthe thrust member'is-turnedby a wrench aside pull. develops against the thrust member which tends to throwthe whole 'device off the hub; invention prevents this since the keeper 12' encloses the entire of'the shaft and holds thememberf7'in axial alignment with the shaft at al'ltimesr In Figs. .4-and5, I have shown an alternate 1 form Which I have found especially adaptable to trucks. This form operatesv in the same way as the preferred form. It consists of a thrust member. This form has no functional advantage over my preferred; form but in larger sizes it; can be made more compactly and economicallyas the annular keeper is included as a... part of the; thrustymember ratherthanbeing made a part of the castin'g;

protruding end claw member, 14, a bearing15, a thrust member 16 threaded in said bearing, and an annular keeper 17 formedflintegrally with said .Having described my invention what I protect'by Letters Patent isz: I 1

1. A tool for removing a hub from a shaft fitting within said hub comprising, a claw member on the inner end of the tool adapted to loosely engage the hub and having a side opening permitting lateral movement of the tool relative to said shaft, thrust means mounted on the outer end of the tool for engaging the outer end of the shaft, said thrust means being operable by the exertion of force directed laterally of the axis of said shaft and a keeper completely surrounding the periphery of the shaft to confine the outer end of the shaft against lateral movement free of said thrust means during the operation of the latter. w

2. A tool forremoving a hub from a shaft fittingwithin said h'ub comprising, a claw member on the inner end of the tool adapted to loosely engage the'hub and having a side opening permitting lateral movement of said inner end of the tool relative to said shaft, a thrust screw threaded in the outer end of the tool for engaging the outer endof the shaft, said screw being disposed substantially coaxially with said shaft when in operative position and means extending across said opening for engaging the periphery of said shaft to confine the outer end of the tool against lateral movement free of the shaft when in operative relation to said thrustscrew. a

3. In atool for removing a shaft from a hub having an annular shoulder, a-substantially semi-circular claw member on the inner end of the tool adapted to loosely engage said shoulder and having a side opening permitting lateral movement of said end of the tool to and from engagement with the shoulder, a thrust screw threaded in the outer end of the tool and having a plain, flat inner end for engaging the outer end of the shaftand a keeper formed near the outer end of the tool to engage the periphery of the shaft on its side toward said opening when the tool is in operative position to thereby retain the outer end of the tool against lateral movement out of operative relation to said thrust screw when thellatter is forcibly turned. 1

In testimony whereof, I have hereunto signed my name to this specification.

NICHOLAS 'W. TRAUTNER. 

